Sincerely sorry that this purchase did not satisfy you. We follow a strict production procedure, audio orders are completed by individual workshops, each part is checked before assembly, preconfigured and test the sound before packaging, so the probability of having problems with both 2 active stereos is very low. Very appretiate the client's test, but the amp module indicators are normal, we deemed that the input signal and wrong wiring are parts of the problem. According to our warranty policy, we offer 3 solutions to the buyer, looking forward to your re-purchase.